Abstract
Helicity indicates the in‐plane magnetic‐moment swirling direction of a skyrmionic configuration. The ability to reverse the helicity of a skyrmionic bubble via purely electrical means has been predicted in frustrated magnetic systems; however, it has been challenging to observe this experimentally. The current‐driven helicity reversal of the skyrmionic bubble in a nanostructured frustrated Fe3Sn2 magnet is experimentally demonstrated. The critical current density required to trigger the helicity reversal is 109–1010 A m−2, with a corresponding pulse‐width varying from 1 µs to 100 ns. Computational simulations reveal that both the pinning effect and dipole–dipole interaction play a crucial role in the helicity reversal process.
The current‐driven helicity reversal of skyrmionic bubbles is realized in a nanostructured frustrated magnet Fe3Sn2. The critical current density required to trigger the helicity reversal is about 109–1010 A m−2. Valuable insights into the fundamental mechanisms underlying the current‐induced dynamics of skyrmionic bubbles are presented.